xfs: calculate XFS_TRANS_QM_QUOTAOFF_END space log reservation at mount time
[linux/fpc-iii.git] / arch / mips / include / asm / mach-loongson / dma-coherence.h
blobe1433055fe98b5f6e876313bbdb98b23a2021e75
1 /*
2 * This file is subject to the terms and conditions of the GNU General Public
3 * License. See the file "COPYING" in the main directory of this archive
4 * for more details.
6 * Copyright (C) 2006, 07 Ralf Baechle <ralf@linux-mips.org>
7 * Copyright (C) 2007 Lemote, Inc. & Institute of Computing Technology
8 * Author: Fuxin Zhang, zhangfx@lemote.com
11 #ifndef __ASM_MACH_LOONGSON_DMA_COHERENCE_H
12 #define __ASM_MACH_LOONGSON_DMA_COHERENCE_H
14 struct device;
16 static inline dma_addr_t plat_map_dma_mem(struct device *dev, void *addr,
17 size_t size)
19 return virt_to_phys(addr) | 0x80000000;
22 static inline dma_addr_t plat_map_dma_mem_page(struct device *dev,
23 struct page *page)
25 return page_to_phys(page) | 0x80000000;
28 static inline unsigned long plat_dma_addr_to_phys(struct device *dev,
29 dma_addr_t dma_addr)
31 #if defined(CONFIG_CPU_LOONGSON2F) && defined(CONFIG_64BIT)
32 return (dma_addr > 0x8fffffff) ? dma_addr : (dma_addr & 0x0fffffff);
33 #else
34 return dma_addr & 0x7fffffff;
35 #endif
38 static inline void plat_unmap_dma_mem(struct device *dev, dma_addr_t dma_addr,
39 size_t size, enum dma_data_direction direction)
43 static inline int plat_dma_supported(struct device *dev, u64 mask)
46 * we fall back to GFP_DMA when the mask isn't all 1s,
47 * so we can't guarantee allocations that must be
48 * within a tighter range than GFP_DMA..
50 if (mask < DMA_BIT_MASK(24))
51 return 0;
53 return 1;
56 static inline void plat_extra_sync_for_device(struct device *dev)
60 static inline int plat_dma_mapping_error(struct device *dev,
61 dma_addr_t dma_addr)
63 return 0;
66 static inline int plat_device_is_coherent(struct device *dev)
68 return 0;
71 #endif /* __ASM_MACH_LOONGSON_DMA_COHERENCE_H */